My idling weirdness.

Sinister04Fx4

Sinister04Fx4

Everything is a project.
Okay, so it usually only happens when I first start my truck up in the morning or when it's just really cold outside. But if I sit and let my truck idle when I first start it, it'll idle high. Around 2500rpm. Then it'll drop down to normal, then raise back up again and then it'll just go back and forth between the two pretty quickly and make a wom wom wom noise.

I am stumped.
 
might not be related but my old bmw used to do the same thing.. check all your fuses; sounds stupid but that's what my problem was. There were two fuses that ran the fuel pumps and one was blown..
 
Clean your MAF and throttle body.

And btw, Your sig says 4.0L OHC....its actually OHV as in Over Head Valve :)
 
It's probably the MAF. I need a new one, I cleaned the throttle body already.

Thanks for pointing that out. I musta hit the c instead of v.
 
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